| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 32 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 19 |
| Registration plate issues | 15 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 14 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 4 |
| Horn not working |1.7.3a| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 4 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 2 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Horn control not functioning. |1.7.2b| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Brake hose which buldges |3.2.B4| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| An item not tested |Manual| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Nearside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Centre Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Upper Front suspension assembly component loose |2.3.1| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Chain guard insecure |6.2.1c| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Nearside Front Front suspension assembly component missing |2.3.1| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Brake pedal has inadequate reserve travel (3.1.3b) | 1 |
| Nearside Handlebar handgrip not secure to handlebars. (2.1.1c) | 1 |
| Offside Handlebar handgrip not secure to handlebars. (2.1.1c) | 1 |
| Steering headbearing has excessive free play (2.2.2) | 1 |
| Throttle operating incorrectly (6.2.1f) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. (3.3.A2b) | 1 |
| Rear Roller brake test indicates a binding brake (3.3.A1a) | 1 |
| Rear Brake disc(s) excessively worn (3.2.A1l) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Headlamp light intensity severely reduced on dip beam (4.1.4 (a)) | 1 |
| Rear Brake component insecure brake arm fixing nut locking device missing (1.1.21 (c)) | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Shock absorber likely to become detached |5.3.2 |a| |ii|| | 1 |
| Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear suspension bush has excessive free play lower shock absorber |2.4.A2a|i|| | 1 |
| Chain guard fouling another component on rear sprocket |6.2.1c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on number plate |1.1.3a| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect shock spring is fouling swing arm and swing arm link arms |5.3.2 |b|| | 1 |
| Offside Front An item not tested |Manual| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Inner Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Roller brake test indicates a binding brake (3.3.A1a) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Steering control fouling between components which interferes with the free movement of the steering (2.1.2a) | 1 |
| Front wheel spindle securing nut locking device missing (2.3.5a) | 1 |
| Drive chain excessively loose (6.2.1d) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.5.1) | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear wheel insecure missing n/s spacer |4.2.3b| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Nearside Front Direction indicators not working Does not illuminate |1.5.1c| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Nearside Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear Brake linkage clevis joint excessively worn |3.2.A1d| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Brake excessively binding (1.2.1 (f)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Nearside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Offside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Brake hose excessively deteriorated | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front shock absorber seal failed and leaking oil both front |2.3.3| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Fuel cap ineffective can not be opened (6.1.3 (b) (i)) | 1 |
| Nearside Front Lower Wheel spindle locking device ineffective lock nut inaffective (5.2.1 (d)) | 1 |
| Offside Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Centre Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Offside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |